iphone - 使用 UIImageTags 以供以后在不同的 ViewController 中使用？Objective-C

Question

我有一个项目，其中有一个带有 6 个图像的 Horizontal UIScrollView，所有图像都填充了自定义图像。

当我将图像从 UIScrollView 拖放到视图顶部的 HeaderImage 上时。它更改了我将图像从 ScrollView 拖放到的区域的 Headerimage。

现在我的挑战是我的 UIScrollView 中有多个不同的图像，但是当我将 UIScrollView 中的任何图像拖放到 HeaderImage 区域时，它们都会变为相同的图像。

如何设置 UIImage 标签，以便在设置 UIScrollView 图像时保存图像，以便在拖放到 HeaderImage 区域时显示正确的图像或不同的图像。

基本上我希望能够根据 ScrollView 中的哪个图像拖放到 HeaderImage 上来更改它。

以下是我的代码：

非常感谢任何帮助。

多谢你们。我真的很感谢所有给予我的巨大帮助。

在此处输入图像描述

我为 GalleryScrollView.m 中的滚动视图设置了我的图像

- (void) addAttachment:(AttachmentItem *)attachment
{
// SAVE ATTACHMENT
[_attachments addObject:attachment];

// RESIZE CONTENT VIEW FOR INSERTINT NEW ATTACHMENT
_scrollView.contentSize = CGSizeMake([_attachments count]*70, 70);

CGFloat startX = (70.0f * ((float)[_attachments count] - 1.0f) + padding);
CGFloat startY = 370;
CGFloat width = 64;
CGFloat height = 64;

GalleryButton *btnAttachment = [[GalleryButton alloc] initWithFrame:CGRectMake(startX, startY, width, height)];
btnAttachment.tag = [_attachments count];
btnAttachment.scrollParent = _scrollView;
btnAttachment.mainView = self.mainView;
btnAttachment.delegate = self;

if (attachment.type == 1){
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 64, 64)];
    imageView.image=[UIImage imageNamed:@"canadian-maple.png"];
    [btnAttachment addSubview:imageView];
    int tag = btnAttachment.tag;
    NSLog(@"%d", tag);
    [imageView release];
}else if (attachment.type == 2){
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 64, 64)];
    imageView.image=[UIImage imageNamed:@"mozambique-wenge.png"];
    [btnAttachment addSubview:imageView];
    int tag = btnAttachment.tag;
     NSLog(@"%d", tag);
    [imageView release];
} else if (attachment.type == 3){
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 64, 64)];
    imageView.image=[UIImage imageNamed:@"canadian-maple.png"];
    [btnAttachment addSubview:imageView];
    int tag = btnAttachment.tag;
    NSLog(@"%d", tag);
    [imageView release];
}
else if (attachment.type == 4){
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 64, 64)];
    imageView.image=[UIImage imageNamed:@"mozambique-wenge.png"];
    [btnAttachment addSubview:imageView];
    int tag = btnAttachment.tag;
    NSLog(@"%d", tag);
    [imageView release];
}
else if (attachment.type == 5){
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 64, 64)];
    imageView.image=[UIImage imageNamed:@"canadian-maple.png"];
    [btnAttachment addSubview:imageView];
    int tag = btnAttachment.tag;
    NSLog(@"%d", tag);
    [imageView release];
}
else if (attachment.type == 6){
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 64, 64)];
    imageView.image=[UIImage imageNamed:@"mozambique-wenge.png"];
    [btnAttachment addSubview:imageView];
    int tag = btnAttachment.tag;
    NSLog(@"%d", tag);
    [imageView release];
}

[_scrollView addSubview:btnAttachment];
[btnAttachment release];

}

并在 HegakaDragAndDropRecycleBinViewController.m 中将它们添加到我的视图中

- (void)viewDidLoad
{
[super viewDidLoad];
self.gallery.mainView = self.view;


AttachmentItem *item = [[AttachmentItem alloc] initWithData:1 data:nil];
[self.gallery addAttachment:item];
[item release];

AttachmentItem *item2 = [[AttachmentItem alloc] initWithData:2 data:nil];
[self.gallery addAttachment:item2];
[item2 release];

AttachmentItem *item3 = [[AttachmentItem alloc] initWithData:3 data:nil];
[self.gallery addAttachment:item3];
[item3 release];

AttachmentItem *item4 = [[AttachmentItem alloc] initWithData:4 data:nil];
[self.gallery addAttachment:item4];
[item4 release];

AttachmentItem *item5 = [[AttachmentItem alloc] initWithData:5 data:nil];
[self.gallery addAttachment:item5];
[item5 release];

AttachmentItem *item6 = [[AttachmentItem alloc] initWithData:6 data:nil];
[self.gallery addAttachment:item6];
[item6 release];
}

并在此处添加 TouchesEnded 的动作

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

if ([delegate isInsideRecycleBin:self touching:YES]){

    CGRect myImageRect = CGRectMake(0, 0, 320, 300);
    headerImage = [[UIImageView alloc] initWithFrame:myImageRect];
    [headerImage setImage:[UIImage imageNamed:@"light-cherry.png"]];
    [self.mainView addSubview:headerImage];

    UIImageView * animation = [[UIImageView alloc] init];
    animation.frame = CGRectMake(self.center.x - 32, self.center.y - 32, 40, 40);

    animation.animationImages = [NSArray arrayWithObjects:
                                 [UIImage imageNamed: @"iconEliminateItem1.png"],
                                 [UIImage imageNamed: @"iconEliminateItem2.png"],
                                 [UIImage imageNamed: @"iconEliminateItem3.png"],
                                 [UIImage imageNamed: @"iconEliminateItem4.png"]
                                 ,nil];
    [animation setAnimationRepeatCount:1];
    [animation setAnimationDuration:0.35];
    [animation startAnimating];
    [self.mainView addSubview:animation];
    [animation bringSubviewToFront:self.mainView];
    [animation release];
    ;
    [UIView beginAnimations:@"goback" context:nil];
    [UIView setAnimationDuration:0.4f];
    [UIView setAnimationBeginsFromCurrentState:YES];
    self.center = _originalOutsidePosition;
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)];
    //        loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
    [UIView commitAnimations];

} else{
    [UIView beginAnimations:@"goback" context:nil];
    [UIView setAnimationDuration:0.4f];
    [UIView setAnimationBeginsFromCurrentState:YES];
    self.center = _originalOutsidePosition;
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)];
    //        loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
    [UIView commitAnimations];

}

[self.delegate touchUp];

好吧，也许我在正确的轨道上。如果这是要走的路，请有人指导我，所以我补充说：

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

switch ([delegate isInsideRecycleBin:self touching:YES]) {
    case 1:{

        CGRect myImageRect = CGRectMake(0, 0, 320, 300);
        headerImage = [[UIImageView alloc] initWithFrame:myImageRect];
        [headerImage setImage:[UIImage imageNamed:@"mozambique-wenge.png"]];
        headerImage.backgroundColor = [UIColor blackColor];
        headerImage.layer.borderWidth = 2;
        headerImage.layer.borderColor = [UIColor blackColor].CGColor;
        headerImage.layer.masksToBounds = YES;
        headerImage.layer.cornerRadius = 5;
        [self.mainView addSubview:headerImage];

        UIImageView * animation = [[UIImageView alloc] init];
        animation.frame = CGRectMake(self.center.x - 32, self.center.y - 32, 40, 40);

        animation.animationImages = [NSArray arrayWithObjects:
                                     [UIImage imageNamed: @"iconEliminateItem1.png"],
                                     [UIImage imageNamed: @"iconEliminateItem2.png"],
                                     [UIImage imageNamed: @"iconEliminateItem3.png"],
                                     [UIImage imageNamed: @"iconEliminateItem4.png"]
                                     ,nil];
        [animation setAnimationRepeatCount:1];
        [animation setAnimationDuration:0.35];
        [animation startAnimating];
        [self.mainView addSubview:animation];
        [animation bringSubviewToFront:self.mainView];
        [animation release];
        ;
        [UIView beginAnimations:@"goback" context:nil];
        [UIView setAnimationDuration:0.4f];
        [UIView setAnimationBeginsFromCurrentState:YES];
        self.center = _originalOutsidePosition;
        [UIView setAnimationDelegate:self];
        [UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)];
        //        loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
        [UIView commitAnimations];

        }

        break;
    case 2:{

        CGRect myImageRect = CGRectMake(0, 0, 320, 300);
        headerImage = [[UIImageView alloc] initWithFrame:myImageRect];
        [headerImage setImage:[UIImage imageNamed:@"recyclebin.png"]];
        headerImage.backgroundColor = [UIColor blackColor];
        headerImage.layer.borderWidth = 2;
        headerImage.layer.borderColor = [UIColor blackColor].CGColor;
        headerImage.layer.masksToBounds = YES;
        headerImage.layer.cornerRadius = 5;
        [self.mainView addSubview:headerImage];

        UIImageView * animation = [[UIImageView alloc] init];
        animation.frame = CGRectMake(self.center.x - 32, self.center.y - 32, 40, 40);

        animation.animationImages = [NSArray arrayWithObjects:
                                     [UIImage imageNamed: @"iconEliminateItem1.png"],
                                     [UIImage imageNamed: @"iconEliminateItem2.png"],
                                     [UIImage imageNamed: @"iconEliminateItem3.png"],
                                     [UIImage imageNamed: @"iconEliminateItem4.png"]
                                     ,nil];
        [animation setAnimationRepeatCount:1];
        [animation setAnimationDuration:0.35];
        [animation startAnimating];
        [self.mainView addSubview:animation];
        [animation bringSubviewToFront:self.mainView];
        [animation release];
        ;
        [UIView beginAnimations:@"goback" context:nil];
        [UIView setAnimationDuration:0.4f];
        [UIView setAnimationBeginsFromCurrentState:YES];
        self.center = _originalOutsidePosition;
        [UIView setAnimationDelegate:self];
        [UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)];
        //        loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
        [UIView commitAnimations];

        }
    }
    }

但没有什么大事发生

score 1 · Accepted Answer

GalleryButton（一个UIView子类本身）正在处理触摸。标记是 a 的属性UIView。这意味着标签已经为您准备好了：

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

    if ([delegate isInsideRecycleBin:self touching:YES]){
        // Log drag to recycle bin (or as you are calling it the header image view)
        NSLog(@"View with tag %i was dragged to the recycle bin",self.tag);

        .....

score 0 · Accepted Answer

我会回答我自己的问题。经过数周尝试不同的方法。原来我所要做的就是使用这段代码。感谢@NJones 让我走上了正轨。

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
if ([delegate isInsideRecycleBin:self touching:YES]){

    if (self.tag == 1) {

        NSLog(@"View with tag %i was dropped onto trigger area",self.tag);

        CGRect myImageRect = CGRectMake(0, 0, 320, 300);
        headerImage = [[UIImageView alloc] initWithFrame:myImageRect];
        [headerImage setImage:[UIImage imageNamed:@"light-cherry.png"]];
        headerImage.backgroundColor = [UIColor blackColor];
        headerImage.layer.borderWidth = 2;
        headerImage.layer.borderColor = [UIColor blackColor].CGColor;
        headerImage.layer.masksToBounds = YES;
        headerImage.layer.cornerRadius = 5;
        [self.mainView addSubview:headerImage];

    }
    else if (self.tag == 2)
    {

        NSLog(@"View with tag %i was dropped onto trigger area",self.tag);

        CGRect myImageRect = CGRectMake(0, 0, 320, 300);
        headerImage = [[UIImageView alloc] initWithFrame:myImageRect];
        [headerImage setImage:[UIImage imageNamed:@"mozambique-wenge.png"]];
        headerImage.backgroundColor = [UIColor blackColor];
        headerImage.layer.borderWidth = 2;
        headerImage.layer.borderColor = [UIColor blackColor].CGColor;
        headerImage.layer.masksToBounds = YES;
        headerImage.layer.cornerRadius = 5;
        [self.mainView addSubview:headerImage];
    }
    UIImageView * animation = [[UIImageView alloc] init];
    animation.frame = CGRectMake(self.center.x - 32, self.center.y - 32, 40, 40);

    animation.animationImages = [NSArray arrayWithObjects:
                                 [UIImage imageNamed: @"iconEliminateItem1.png"],
                                 [UIImage imageNamed: @"iconEliminateItem2.png"],
                                 [UIImage imageNamed: @"iconEliminateItem3.png"],
                                 [UIImage imageNamed: @"iconEliminateItem4.png"]
                                 ,nil];
    [animation setAnimationRepeatCount:1];
    [animation setAnimationDuration:0.35];
    [animation startAnimating];
    [self.mainView addSubview:animation];
    [animation bringSubviewToFront:self.mainView];
    [animation release];
    ;
    [UIView beginAnimations:@"goback" context:nil];
    [UIView setAnimationDuration:0.4f];
    [UIView setAnimationBeginsFromCurrentState:YES];
    self.center = _originalOutsidePosition;
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)];
    //        loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
    [UIView commitAnimations];

} else{
    [UIView beginAnimations:@"goback" context:nil];
    [UIView setAnimationDuration:0.4f];
    [UIView setAnimationBeginsFromCurrentState:YES];
    self.center = _originalOutsidePosition;
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector: @selector(animationDidStop:finished:context:)];
    //        loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
    [UIView commitAnimations];

}

[self.delegate touchUp];

}

score 0 · Accepted Answer

0

在 touchesBegan 上，保存您开始的“附件项目”！？

于 2012-11-13T20:26:25.950 回答

iphone - 使用 UIImageTags 以供以后在不同的 ViewController 中使用？Objective-C

3 回答 3

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